DL 154 then FR 506 at Dublin
Boston → Dublin → Bristol
Timetable, Dublin time
09:45DL 154 from Boston at the gate
06:20FR 506 to Bristol leaves the gate
20 h 35 apart on the timetable, overnight
FR 506 leaves 20 h 35 after DL 154 arrives on the timetable: more than half a day, so not a connection we count.